Dispenser for personal care composition

Abstract

A dispenser, in the form of a sachet, made from a water-soluble plastics material, containing a personal care composition including at least one surfactant together with an effervescent base material, the base material including any material or combination of materials that when in contact with a sufficient amount of water liberates gas.

What is claimed is:  
     
         1 . A dispenser, in the form of a sachet, made from a water-soluble plastics material, containing a personal care composition, the personal care composition comprising at least one surfactant and an effervescent base material, the base material comprising any material or combination of materials that when in contact with a sufficient amount of water liberates a gas.  
     
     
         2 . The dispenser of  claim 1 , wherein the sachet is made from a water-soluble film.  
     
     
         3 . The dispenser of  claim 1 , wherein the sachet is made from a material selected from the group consisting of poly-vinyl alcohol (PVOH) polymer, poly-vinyl pyrrolidine (PVP) polymer, starch-based polymer, cellulose and alginates, and combinations thereof.  
     
     
         4 . The dispenser of  claim 3 , wherein the sachet comprises a poly-vinyl alcohol film having a thickness of about 10 microns to about 1000 microns.  
     
     
         5 . The dispenser of  claim 4 , wherein the sachet has film thickness of about 15 microns to about 80 microns.  
     
     
         6 . The dispenser of  claim 4 , wherein the sachet has a film thickness of about 20 microns to about 60 microns.  
     
     
         7 . The dispenser of  claim 1 , wherein the effervescent base material and surfactant are combined together in a powdered or granular form.  
     
     
         8 . The dispenser of  claim 1 , wherein the sachet contains a personal care composition in which the components are anhydrous.  
     
     
         9 . The dispenser of  claim 1 , wherein the at least one surfactant comprises a surfactant selected from the group consisting of an anionic surfactant, a non-anionic surfactant, a cationic surfactant, and an amphoteric surfactant, and combinations thereof.  
     
     
         10 . The dispenser of  claim 1 , wherein the surfactant comprises at least one anionic surfactant selected from the group consisting of a salt of fatty acid, an alkyl sulphates, an alkyl ether sulphates, an aromatic hydrocarbon sulphate, an isethionates, a sulphosuccinates, and combinations thereof.  
     
     
         11 . The dispenser of  claim 1 , wherein the surfactant comprises at least one amphoteric surfactant selected the group consisting of an alkyl amphoacetate, a betaine, an amphopropionates, and combinations thereof.  
     
     
         12 . The dispenser of  claim 1 , wherein the surfactant comprises at least one non-ionic surfactant selected the group consisting of a fatty alcohol ethoxylte, a fatty acid alkanolamide, an amine oxide, an alkyl polyglucosides, and combinations thereof.  
     
     
         13 . The dispenser of  claim 1 , wherein the surfactant comprises a quaternary ammonium compound.  
     
     
         14 . The dispenser of  claim 1 , wherein the at least one surfactant constitutes from about 1 percent to about 99, by weight, of the total composition.  
     
     
         15 . The dispenser of  claim 14 , wherein the at least one surfactant constitutes from about 2.5 percent to about 60 percent, by weight, of the total composition.  
     
     
         16 . The dispenser of  claim 14 , wherein the at least one surfactant constitutes from about 5 percent to about 30 percent, by weight, of the total composition.  
     
     
         17 . The dispenser of  claim 1 , wherein the effervescent base material constitutes from about 1 percent to about 99 percent, by weight, of the total composition.  
     
     
         18 . The dispenser of  claim 17 , wherein the effervescent base material constitutes from about 40 percent to about 97.5 percent, by weight, of the total composition.  
     
     
         19 . The dispenser of  claim 17 , wherein the effervescent base material constitutes from about 70 percent to about 95 percent, by weight, of the total composition.  
     
     
         20 . The dispenser of  claim 1 , wherein the effervescent base material comprises at least one alkaline salt and at least one acid.  
     
     
         21 . The dispenser of  claim 20 , wherein the alkaline salt is selected from the group consisting of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, sodium sesquicarbonate, potassium sesquicarbonate, calcium carbonate, magnesium carbonate, ammonium carbonate, ammonium bicarbonate and ammonium sesquicarbonate, and combinations thereof.  
     
     
         22 . The dispenser of  claim 20 , wherein the acid comprises one of citric acid, formic acid, tartaric acid, glycolic acid, salicylic acid, sorbic acid, maleic acid, lactic acid, and combinations thereof.  
     
     
         23 . The dispenser of  claim 1 , wherein the personal care composition comprises a stoichiometric amount of the effervescent base material.  
     
     
         24 . The dispenser of  claim 1 , wherein the effervescent base material comprises sodium bicarbonate and citric acid.  
     
     
         25 . The dispenser of  claim 1 , the personal care composition comprising: 
 sodium bicarbonate;    citric acid;    sodium lauryl sulphate; and    cocamidopropyl betaine.    
     
     
         26 . The dispenser of  claim 25 , the personal care composition comprising: 
 about 46.5 percent sodium bicarbonate;    about 38.8 percent citric acid;    about 11.5 percent sodium lauryl sulphate; and    about 2.1 percent cocamidopropyl betaine.    
     
     
         27 . The dispenser of  claim 25 , further comprising fragrance and color.  
     
     
         28 . A dispenser, in the form of a water-soluble plastics material enclosure, containing a powdered or granulated personal care composition, the personal care composition comprising at least one surfactant and an effervescent base material, the base material comprising an acid and an alkaline salt that react with each other in the presence of water to release a gas.  
     
     
         29 . A dispenser containing a personal care composition, comprising: 
 a poly-vinyl alcohol polymeric enclosure having a thickness ranging from about 10 microns to about 100 microns;    at least one surfactant selected from the group consisting of an anionic surfactant, a non-ionic surfactant, a cationic surfactant, an amphoteric surfactant, and combinations thereof;    a carbonate selected from the group consisting of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, sodium sesquicarbonate, potassium sesquicarbonate, calcium carbonate, magnesium carbonate, ammonium carbonate, ammonium bicarbonate and ammonium sesquicarbonate, and combinations thereof; and    an acid selected from the group consisting of citric acid, formic acid, tartaric acid, glycolic acid, salicylic acid, sorbic acid, maleic acid, lactic acid, and combinations thereof.